Well agitator



NOV. 12, 1940. J NQTLEY 2,221,057

WELL AGITATOR Filed July l8, 1939 a 0 I Q ,6)

I tlbsq klilll'oflqy w; v BY ATTORNEYS Patented Nov. 12, 1940 WELL AGITATOR- JosepHH} Notley, Oklahoma City, Okla, 'assignor l of one-half to Arthur Thatcher, Oklahoma City,

Okla.

' This invention. relates to an improved oil wellagitator tool, and a particular. object ofthe invention is to provide a device capable of being suspended and reciprocated inpa well hole by.

for washing the sand, paraffin, and the like,

from the walls of the well hole into the oil pool.

And still another important object of the invention is to provide a well agitator of such construction that it sprays oil from the oil pool against the wall of the hole in order to wash loose sand, and the like, down into the oil pool, so that it can be bailed out in any conventional manner.

Other objects and advantages of the invention will be evident from the following detailed description read in conjunction with the accompanying drawing which illustrates one form of my invention.

In the drawing:

Fig. 1 is an elevational view of the tion, and, b

Fig. 2 is a vertical elevation view of the invention shown disposed in an'oil well hole.

Fig. 3 is a detail view disclosing a modified construction of the annular grooves.

Referring to the drawing in detail, theimproved oil well agitator comprises a cylindrical barrel or plunger it, provided at its upper end with threads R2 for attachment to a drill stem (not shown) in order to suspend the barrel ll] in the bottom of an oil well hole I4. The barrel in is formed of steel or any similar metal, and may be of any length or diameter desired, and preferably consists of an upper portion l3 attached at IE to the hollow barrel in for a purpose to be hereinafter set forth. The outer periphery of the barrel Ill is provided with a plurality of vertical or axially spaced annular grooves I6 for a purpose as will be hereinafter referred to.

The lower end of the barrel is rounded off, and

is provided with an aperture l8 through which extends a smaller cylindrical tube 20 adapted to be disposed in the interior 22 of the barrel Ill. One end of the cylinder 20 is secured by threads 24 to an apertured baffle plate or partition 26 provided in the interior of the barrel [0. The lower end of the cylinder 20 is secured in the aperture l8.

A centrally disposed valve cage 28 is secured to the cylinder 20 immediately above the bafiie Application July 18;;1939, Scrial N0. 285,183 i 5 Claims (01. 166 -20) inven- 26, and houses a ball valve 3ilv cooperating with a valve seat 32. The walls oi the barrel Ill, adjacent the cage 28, are provided witha plu; rality of circumferentially spaced apertures 34 for a purpose as'will behereinafter set forth. It will be apparent that the, upper portion. l3 can be uncoupled at. 15 to allow replacement of. the valve assembly. T j

Alluding further to th annularigroove'ulfi, each of the grooves are provided with 'an annularly inclined wall 36 and a horizontal wall 38. The walls 38 are provided with arecess 4i] communicating with a plurality of inclined, ports or apertures 42 extending to the outer periphery of the barrel I0. I

. In operation, the agitator is submerged in the fluid of the well hole, and is reciprocated. vertically by the drill stem. On the downward stroke of the barrel. in, fluid in the well hole is allowed to displace through the cylinder 20 to move the ball valve 30 011 its seat 32, wherein fluid passes through apertures 34 to be sprayed against the walls of the well hole l4. Upon an upward movement of the barrel, in, fluid passes into the annular grooves 16 and discharges through the apertures 42 to be sprayed against the wall M in order to dislodge, and wash down any loose particles of sand,parafiin, and the like, and cause the same to fall into the well hole below the agitator, to be bailed out in any conventional manner. i

j The reciprocatory motion of the agitator is usually very rapid, and its improved construetion renders a forceful and effective spraying of the oil against the wall of the well hole M on both the upward and downward strokes of the agitator to assure a washing down of all loose ribs or braces 44 (preferably three in number) circumferentially spaced at approximately degrees apart. In certain oil fields a liner screen is used in the well which often becomes blocked up by debris, and the like. The barrel l0 can be rotated whereby the ribs 44 will agitate the fluid for cleaning screens, and the like. i

Changes may be made-in the combination and arrangement of parts as heretofore set forth in" the specification and shownin the drawing, it being understoodthat any modification in the precise embodiment of the invention may be made within the scope of the following claims without departing from the spirit of the invention.

What I claim is:

1. In a well cleaning tool comprising a barrel adapted to be reciprocated in an oil well hole, a valve chamber in the barrel, means allowing displacement of fluid from the well hole to the valve chamber, means for discharging the fluid from the valve'chamber to the walls of the well hole, and means on the periphery of the barrel for spraying fluid against the walls of the well hole.

2. In a well agitator comprising a tubular body having a valve assembly disposed in they interior thereof, an inner cylinder disposed in the tubular body providing communication between the valve assembly and the wall, lateral fluid outlets adjacent the valve assembly, a plurality of axially spaced annular grooves on the periphery of the body, and a plurality of apertures communicating with each of the grooves for spraying fluid outwardly from the tubular body.

3. A tool for agitating liquid in an oil well comprising a tubular body adapted to be rotated in the well, a plurality of vertically spaced annular grooves arranged, on the body, a plurality of circumferentially spaced ribs provided in each of the grooves to assist agitation during rotation of the body, and a plurality of apertures communicating with each of the grooves for spraying fluid from the well against the walls of the well hole.

4. In a cleaning tool comprising a barrel adapted to be reciprocated in an oil Well hole, a valve chamber in the barrel, a cylinder disposed in the'interior of the barrel and providing communication between the valve chamber and the well hole, means for discharging fluid from the valve chamber against the walls of the well hole upon a downward stroke of the barrel, and means arranged on the periphery of the barrel for spraying fluid against the walls on an upward stroke of the barrel.

5. In a cleaning tool comprising a barrel adapted to be reciprocated in an oil Well hole, a valve chamber in the barrel, a cylinder disposed inthe interior of the barrel and providing communication between the valve chamber and the well hole, means for discharging fluid from the valve chamber against the walls of the well hole, means arranged on the periphery of the barrel for spraying fluid against the walls of the well hole, and a plurality of circumferentially spaced ribs provided in the last mentioned means for JOSEPH H. NOTLEY. 

